Analysis of aluminum-graphene-based plasmonic sensor for biosensing applications in the communication band

Sambhavi Shukla; Pankaj Arora

doi:10.1117/12.2579107

5 March 2021 Analysis of aluminum-graphene-based plasmonic sensor for biosensing applications in the communication band

Sambhavi Shukla, Pankaj Arora

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Proceedings Volume 11694, Photonic and Phononic Properties of Engineered Nanostructures XI; 116941F (2021) https://doi.org/10.1117/12.2579107
Event: SPIE OPTO, 2021, Online Only

Abstract

Aluminum-Graphene based plasmonic sensor has been proposed for bio-sensing applications and analyzed for the resonant angle interrogation in the communication band. The addition of the graphene layer above a thin Aluminum metal layer, separated by a high index dielectric Silicon layer is considered. The performance parameters such as sensitivity, reflectivity-amplitude, and figure of merit are analyzed and compared with the conventional plasmonic sensors for the wavelength of 1550 nm. The combination of graphene and silicon layer leads to stronger interactions with biomolecules along with improved sensitivity. The simulated results show that the increase in the number of graphene layers helps to further increase the sensitivity of the biosensor. The maximum sensitivity observed for the plasmonic device was found to be 131°/RIU at the wavelength of 1550 nm.

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Sambhavi Shukla and Pankaj Arora "Analysis of aluminum-graphene-based plasmonic sensor for biosensing applications in the communication band", Proc. SPIE 11694, Photonic and Phononic Properties of Engineered Nanostructures XI, 116941F (5 March 2021); https://doi.org/10.1117/12.2579107

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KEYWORDS

Biological research

Graphene

Aluminum

Biosensing

Plasmonic sensors

Silicon

Surface plasmons

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